scholarly journals The efficacy of spinosad against the western flower thrips,Frankliniella occidentalis, and its impact on associated biological control agents on greenhouse cucumbers in southern Ontario

2005 ◽  
Vol 61 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Terri Jones ◽  
Cynthia Scott-Dupree ◽  
Ron Harris ◽  
Les Shipp ◽  
Brenda Harris
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Biological Control Agents ◽  
Southern Ontario ◽  
Flower Thrips

scholarly journals Anthocoris nemorum (Heteroptera: Anthocoridae) as predator of cabbage pests – voracity and prey preference

2019 ◽  
Vol 21 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Marie-Louise Rugholm Simonsen ◽  
Annie Enkegaard ◽  
Camilla Nordborg Bang ◽  
Lene Sigsgaard
Keyword(s):  
Biological Control ◽  
Plutella Xylostella ◽  
Frankliniella Occidentalis ◽  
Diamondback Moth ◽  
Western Flower Thrips ◽  
Potential Candidate ◽  
Model Species ◽  
Flower Thrips ◽  
Cabbage Pests ◽  
Cabbage Aphids

Laboratory experimentswere performed with adult female Anthocoris nemorum (Linnaeus) (Heteroptera: Anthocoridae) at 20°C ± 1°C, L16:D8, 60–70% RH to determine voracity and preference on cabbage aphids (Brevicoryne brassicae L.) (Hemiptera: Aphididae), diamondback moth larvae (Plutella xylostella L.) (Lepidoptera: Plutellidae) and Western flower thrips (Frankliniella occidentalis Pergande) (Thysanoptera: Thripidae) (model species for cabbage thrips (Thrips angusticeps Uzel) (Thysanoptera: Thripidae)). When offered individually, A. nemorum readily accepted all three species with no significant differences in consumption. When aphids and moth larvae were offered simultaneously, A. nemorum showed preference for the latter (numbers eaten and biomass consumed). When aphids and thrips were offered together, A. nemorum preferred thrips in terms of numbers eaten but preferred aphids in terms of biomass consumed. The results showed that A. nemorum is a voracious predator of B. brassicae, P. xylostella and F. occidentalis and can therefore be considered as a potential candidate for biological control in cabbage.

BIOLOGICAL CONTROL OF FUNGUS GNATS, BRADYSIA SPP. (DIPTERA: SCIARIDAE), AND WESTERN FLOWER THRIPS, FRANKLINIELLA OCCIDENTALS (PERGANDE) (THYSANOPTERA: THRIPIDAE), IN GREENHOUSES USING A SOIL-DWELLING PREDATORY MITE, GEOLAELAPS SP. NR. ACULEIFER (CANESTRINI) (ACARI: LAELAPIDAE)

1990 ◽  
Vol 122 (5) ◽  
pp. 975-983 ◽  
Author(s):  
David R. Gillespie ◽  
Donald M.J. Quiring
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Predatory Mite ◽  
Flower Thrips ◽  
Fungus Gnats ◽  
Fungus Gnat ◽  
Greenhouse Cucumber ◽  
Crop Cycle ◽  
Hydroponically Grown

AbstractA soil-dwelling predatory mite, Geolaelaps sp. nr. aculeifer (Canestrini), introduced inundatively at a rate of 6000 mites per plant to the sawdust substrate of hydroponically grown, greenhouse cucumbers significantly reduced numbers of fungus gnat, Bradysia spp., larvae and adults over a 10-week period. Inundative introductions of 1600 mites per plant reduced emergence of western flower thrips, Frankliniella occidentalis (Pergande), adults to about 30% of that in the controls over a 40-day trial. An inoculative introduction of 125 mites per plant to cucumber plants in selected rows in a commercial greenhouse reduced peak fungus gnat numbers to about 20% of those in untreated rows. These results suggest that a single inoculative introduction of Geolaelaps sp. nr. aculeifer, early in the crop cycle, would maintain control of fungus gnat populations in greenhouse cucumber crops at an acceptable level. This predator would also contribute to biological control of western flower thrips by reducing emergence of adults.

scholarly journals Selection of promising fungal biological control agent of the western flower thrips Frankliniella occidentalis (Pergande)

2012 ◽  
Vol 54 (6) ◽  
pp. 487-493 ◽  
Author(s):  
S. Niassy ◽  
N.K. Maniania ◽  
S. Subramanian ◽  
L.M. Gitonga ◽  
D.M. Mburu ◽  
...  
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Biological Control Agent ◽  
Western Flower Thrips ◽  
Control Agent ◽  
Flower Thrips ◽  
Selection Of

COMPETITION BETWEEN ORIUS TRISTICOLOR (WHITE) (HEMIPTERA: ANTHOCORIDAE) AND AMBLYSEIUS CUCUMERIS (OUDEMANS) (ACARI: PHYTOSEIIDAE) FEEDING ON FRANKLINIELLA OCCIDENTALIS (PERGANDE) (THYSANOPTERA: THRIPIDAE)

1992 ◽  
Vol 124 (6) ◽  
pp. 1123-1128 ◽  
Author(s):  
David R. Gillespie ◽  
D.J.M. Quiring
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Vegetable Crops ◽  
Amblyseius Cucumeris ◽  
Flower Thrips ◽  
Greenhouse Vegetable

AbstractThe competition between Orius tristicoior (White) and Amblyseius cucumeris (Oude-mans), both preying on western flower thrips, Frankliniella occidentaiis (Pergande), was assessed. On single leaves in smail cages, mortality of A. cucumeris due to O. tristicoior was inversely proportional to thrips density; thrips mortality due to O. tristicoior was unaffected by A. cucumeris density. The proportion of A. cucumeris in the prey eaten was consistently less than its proportion in the prey initially available, both when thrips density varied and when A. cucumeris density varied. These relationships held for both immature and adult thrips. These results suggest that O. tristicoior and A. cucumeris could be used simultaneously for biological control of western flower thrips in greenhouse vegetable crops.

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